1. Introduction to C95500 Nickel Aluminum Bronze
C95500 is a premium grade nickel aluminum bronze alloy known for its exceptional strength, corrosion resistance, and reliability in demanding applications. This comprehensive analysis covers all aspects of material standards and specifications for C95500 tubes.
2. Chemical Composition Standards
2.1 Primary Composition Requirements
| unsur | Julat Komposisi (%) | Preferred Range (%) | Effects on Properties |
|---|---|---|---|
| Tembaga | 78.0 – 82.0 | 80.0 – 81.0 | Base metal, provides matrix structure |
| Nikel (Ni) | 3.0 – 5.5 | 4.0 – 5.0 | Improves strength and corrosion resistance |
| Aluminium (Al) | 8.2 – 9.5 | 8.5 – 9.0 | Forms strengthening precipitates |
| Besi (Fe) | 3.5 – 4.5 | 3.8 – 4.2 | Enhances grain refinement |
| Mangan (Mn) | 0.8 – 1.5 | 1.0 – 1.3 | Improves deoxidation |
2.2 Trace Element Limitations
| unsur | Maximum Limit (%) | Critical Control Point |
|---|---|---|
| Silikon (Si) | 0.10 | Affects fluidity |
| Plumbum (Pb) | 0.03 | Toxicity control |
| Zink (Zn) | 0.20 | Rintangan penyahzinan |
| Fosforus (P) | 0.05 | Penapisan bijirin |
| Sulfur (S) | 0.05 | Kawalan kekotoran |
3. Mechanical Properties Standards
3.1 Room Temperature Mechanical Properties
| Harta benda | minimum | maksimum | Kaedah Ujian |
|---|---|---|---|
| Kekuatan Tegangan (MPa) | 650 | 790 | ASTM E8 |
| Kekuatan Hasil (MPa) | 280 | 450 | ASTM E8 |
| Pemanjangan (%) | 15 | – | ASTM E8 |
| Reduction in Area (%) | 20 | – | ASTM E8 |
| Kekerasan (Brinell) | 170 | 210 | ASTM E10 |
| Impact Strength (Joules) | 34 | – | ASTM E23 |
3.2 Elevated Temperature Properties
| Suhu (°C) | Kekuatan Tegangan (MPa) | Kekuatan Hasil (MPa) | Pemanjangan (%) |
|---|---|---|---|
| 20 | 720 | 350 | 15 |
| 100 | 680 | 330 | 16 |
| 200 | 630 | 300 | 18 |
| 300 | 550 | 270 | 20 |
| 400 | 450 | 230 | 22 |
| 500 | 350 | 180 | 25 |
4. Physical Properties Standards
4.1 Basic Physical Properties
| Harta benda | Nilai | Unit | Kaedah Ujian |
|---|---|---|---|
| Ketumpatan | 7.58 | g/cm³ | ASTM B311 |
| Julat Lebur | 1045-1080 | °C | DSC Analysis |
| Haba Tertentu | 0.377 | kJ/kg·K | ASTM E1269 |
| Kekonduksian Terma | 45 | W/m·K | ASTM E1530 |
| Kerintangan Elektrik | 12.8 | μΩ·cm | ASTM B193 |
| Kebolehtelapan Magnetik | 1.05 | – | ASTM A342 |
4.2 Thermal Properties
| Harta benda | Julat Suhu (°C) | Nilai | Unit |
|---|---|---|---|
| Pekali Pengembangan Terma | 20-100 | 16.2 | μm/m·K |
| Pekali Pengembangan Terma | 20-200 | 16.8 | μm/m·K |
| Pekali Pengembangan Terma | 20-300 | 17.3 | μm/m·K |
| Kapasiti Haba Tertentu | 20-100 | 0.377 | kJ/kg·K |
| Thermal Diffusivity | 20-100 | 15.8 | mm²/s |
5. Dimensional Standards
5.1 Standard Tube Dimensions
| Nominal OD (mm) | Wall Thickness Options (mm) | Standard Lengths (m) | Weight (kg/m) |
|---|---|---|---|
| 15.88 – 25.4 | 1.65, 2.11, 3.38 | 3, 6 | 0.6 – 1.8 |
| 31.75 – 50.8 | 2.11, 3.18, 4.78 | 3, 6 | 1.5 – 5.2 |
| 63.5 – 101.6 | 3.18, 4.78, 6.35 | 3, 6 | 4.8 – 15.3 |
| 114.3 – 219.1 | 4.78, 6.35, 12.7 | 3, 6 | 13.2 – 65.8 |
| 273.0 – 406.4 | 6.35, 12.7, 19.1 | 3, 6 | 41.5 – 182.6 |
5.2 Manufacturing Tolerances
| Dimension | Julat Saiz | Toleransi | Kaedah Pemeriksaan |
|---|---|---|---|
| Outside Diameter | ≤ 50mm | ±0.25mm | Micrometer |
| Outside Diameter | > 50mm | ±0.5% | Caliper |
| Ketebalan Dinding | All | ±10% | Ultrasonic |
| Panjang | All | +3mm, -0mm | Tape Measure |
| Kelurusan | All | 1.5mm/m | Straightedge |
| Ovality | All | 1% of OD | Dial Gauge |
6. Surface Finish Requirements
6.1 Surface Finish Classifications
| Kelas | Ra Value (μm) | Permohonan | Kaedah Pemeriksaan |
|---|---|---|---|
| Class A | 0.4 – 0.8 | Critical Flow | Profilometer |
| Class B | 0.8 – 1.6 | General Hydraulic | Visual + Measurement |
| Class C | 1.6 – 3.2 | Standard Industrial | Visual |
| Class D | 3.2 – 6.3 | Non-Critical | Visual |
6.2 Surface Defect Tolerances
| Defect Type | Maximum Allowable Depth | Maximum Length | Repair Method |
|---|---|---|---|
| Scratches | 0.1mm | 25mm | Menggilap |
| Pits | 0.2mm | 3mm | Not Required |
| Dents | Not Allowed | – | Rejection |
| Tool Marks | 0.05mm | 10mm | Menggilap |
7. Quality Control Standards
7.1 Required Testing Procedures
| Test Type | Standard | Kekerapan | Kriteria Penerimaan |
|---|---|---|---|
| Analisis Kimia | ASTM E478 | Per Heat | Within Composition Limits |
| Tensile Testing | ASTM E8 | Per Lot | Meet Mechanical Properties |
| Hardness Testing | ASTM E10 | Per Lot | Within Specified Range |
| Ujian Ultrasonik | ASTM E213 | 100% | No Reportable Indications |
| Hydrostatic Testing | ASTM E498 | 100% | No Leakage |
| Visual Inspection | ASTM B666 | 100% | No Visual Defects |
7.2 Non-Destructive Testing Requirements
| NDT Method | Standard | Coverage | Acceptance Level |
|---|---|---|---|
| Ultrasonic | ASTM E213 | 100% | Kelas 1 |
| Penetrant | ASTM E165 | As Required | Level 2 |
| Radiographic | ASTM E1742 | As Required | Level 2 |
| Eddy Current | ASTM E243 | Pilihan | Kelas 1 |
8. Heat Treatment Standards
8.1 Heat Treatment Parameters
| Proses | Julat Suhu (°C) | Time (Hours) | Cooling Method |
|---|---|---|---|
| Penyepuhlindapan Penyelesaian | 870-900 | 1-2 | Water Quench |
| Melegakan Tekanan | 350-400 | 2-3 | Air Cool |
| Pengerasan Umur | 450-500 | 2-4 | Air Cool |
| Homogenization | 750-800 | 4-6 | Furnace Cool |
8.2 Post-Heat Treatment Properties
| Harta benda | As-Cast | Solution Annealed | Age Hardened |
|---|---|---|---|
| Kekuatan Tegangan (MPa) | 550-650 | 650-750 | 700-800 |
| Kekuatan Hasil (MPa) | 250-300 | 280-350 | 350-450 |
| Pemanjangan (%) | 12-15 | 15-18 | 10-15 |
| Kekerasan (HB) | 150-170 | 170-190 | 190-220 |
9. Corrosion Resistance Standards
9.1 Corrosion Rate Data
| Persekitaran | Suhu (°C) | Kadar Kakisan (mm/tahun) | Kaedah Ujian |
|---|---|---|---|
| air laut | 20 | 0.025 | ASTM G31 |
| Air Tawar | 20 | 0.013 | ASTM G31 |
| 3% NaCl | 20 | 0.028 | ASTM G31 |
| 10% H₂SO₄ | 20 | 0.15 | ASTM G31 |
| Suasana Perindustrian | 20 | 0.008 | ASTM G50 |
9.2 Galvanic Compatibility
| Coupled Material | Galvanic Potential (mV) | Compatibility Rating |
|---|---|---|
| 316 Keluli Tahan Karat | +50 | bagus |
| Keluli Karbon | -300 | miskin |
| Monel 400 | +30 | Cemerlang |
| titanium | +200 | Adil |
| Gangsa Aluminium | -20 | Cemerlang |
10. Industry-Specific Standards
10.1 Marine Industry Requirements
| Standard | Organisasi | Requirements | Permohonan |
|---|---|---|---|
| NACE MR0175 | NACE | Sour Service | Offshore |
| DNV-GL Rules | DNV-GL | Marine Grade | Shipbuilding |
| ABS Rules | ABS | Marine Grade | Naval Vessels |
| Lloyd’s Register | LR | Marine Grade | Commercial Marine |
10.2 Pressure Equipment Standards
| Standard | Wilayah | Pressure Rating | Julat Suhu |
|---|---|---|---|
| ASME B31.3 | antarabangsa | Class 150-300 | -29°C to 260°C |
| PED 2014/68/EU | Eropah | Category I-IV | -10°C to 200°C |
| AS1210 | Australia | Class 150-300 | -20°C to 200°C |
| JIS B8285 | Jepun | K10-K20 | -10°C to 200°C |
11. Certification Requirements
11.1 Material Certification Types
| Certificate Type | Standard | Content | Permohonan |
|---|---|---|---|
| 3.1 Certificate | EN 10204 | Chemical & Mechanical | Standard |
| 3.2 Certificate | EN 10204 | Third Party Verified | Critical Service |
| Type Test | ASTM A450 | Production Testing | Kelayakan |
| PMI Certificate | ASTM E1916 | Material Verification | Special Cases |
11.2 Quality System Requirements
| Sistem | Standard | Skop | Audit Frequency |
|---|---|---|---|
| ISO 9001 | Quality Management | Full System | tahunan |
| ISO 14001 | alam sekitar | Kesan Alam Sekitar | tahunan |
| ISO 45001 | Keselamatan | Occupational Health | tahunan |
| API Q1 | Minyak & Gas | Product Quality | Biennial |
12. Storage and Handling Standards
12.1 Storage Requirements
| Aspek | Keperluan | Monitoring | Dokumentasi |
|---|---|---|---|
| Suhu | 10-30°C | Daily | Log Sheet |
| Kelembapan | <60% RH | Daily | Log Sheet |
| Stacking | Max 3 Layers | Per Movement | Inspection Report |
| Protection | UV Protected | Bulanan | Condition Report |
12.2 Handling Specifications
| Operasi | Equipment | Procedure | Keperluan Keselamatan |
|---|---|---|---|
| Loading | Crane/Forklift | Standard Lift | PPE Required |
| Transport | Cushioned Rack | Secured Load | Load Testing |
| Unloading | Crane/Forklift | Controlled Lower | Safety Zone |
| Storage | Rack System | Organized Stack | Pemeriksaan Berkala |
This comprehensive analysis of C95500 nickel aluminum bronze tubes provides detailed material standards and specifications for engineering, procurement, and quality control purposes. All specifications should be verified against current standards and specific project requirements.